Printing mechanism



Jan. 7, 1947;

A. w. MILLS ETAL- ,383

PRINTING MECHANISM Filed Dec. 23, 1943 3 Sheets-$heet l INVENTORS ALEERI' I Mu. 1.5 foam/m J. AABE/VM FQgy/r FUR/WAN.

ATTORNEY Jan. 7, 1947- A. w. MILLS ET AL PRINTING MECHANISM 3 Sheets-Sheet 3 Filed Dec. 23,, 1943 INVENTORS 141.5597 /1 44/445 Eon 400 J. PABE/Vfl/l FRANK J FUR/14AM 'iorations may be Patented i it amma a Albert W. Mills and Frank and Edward .1 Rabenda to llnternation New liork signers Corporation, New York ll. linrman, llt'iidicott,

, Binghamton, N. 11., asall Business chines N. Y., a corporation of Application December 2 3,, 1963,, Serial No. 535,373

This invention relates to printing mechanism and more particularly to printing mechanism controlled by perforated record cards.

The principal object ofthe invention is to prowas an improved printing mechanism arranged for printing numerical data at high speed under control, of combinations! perforations in record cards.

A further object is to provide an improved record card and coding arrangement for recording numerical data.

Other objects of the invention will be pointed out in the iollowing description and claims and illustrated in the accompanying drawings, which disclose, by way of example, the principle of the invention and the best mode, which has been contemplated, of applying that principle.

in the drawings;

i is a central printing mechanism.

2 an enlarged scale detail of the operat ing bail mechanism.

Fig. 3 is a wiring diagram.

Fig. i is a fragment of a record card.

The record card it of Fig. .5 is provided with two fields l 6, each having six horizontal data receiving lines i2, designated fl, 1, 2, 3, 4, and KH. Vertical lines to, whose spacing may be closer than illustrated, designate columnar positions at whose intersection with lines 52, rectangular permade in accordance with the digital code shown. in this coding, the digits 0, i, 2, 3, and e are represented by perforations on the like identified lines 62, while the digits 5, 6, 7, 8, and 9 are represented by the holes 0, i, 2, 3, and 4, respectively, accompanied by a key hole on line designated KH.

These perforations are sensed by the device diagrammatically shown in Fig. 3 as comprising horizontal rows of brushes it and vertical con-= ductors l5 and it. The card ii? is the conductors and brushes and the perforations are thereby concurrently sensed by the brushes it making contact with a conductor 65 or it through a perforation, The brushes it are connected by wires ii to segments 58 of a distributor iii whose rotating brush it is connected to positive source of current. The conductors is are wired to digit selecting magnets 2| and the conductors it are wired to group selecting magnets 22. After the card is placed in sensing position, brush it is rotated counterclockwise, and in any card column containing a key hole KI-I a circuit is completed from positive source, brush 28, segment :8, designated wire llybrush as, key.

section of the improved placed between and Q, magnet it are thereafter energized at diiifez'entiai times.

The devices contsoiled hy magnets 28 and 22 v hole conductor it, magnet 22, wire 23 to negative source oi? current. In columns having no key hole, this circuit will, of coursenot be com pleted. As brush to thereafter sweeps across the remaining segments it, the magnet 20 related to a card column will be energized at a difierential time depending on the location of the hole in that column. For example, with a hole in the l. position the circuit is completed when brush it contacts the segment l8 designated 1, s and this clrcuit is traceable from positive source, brush it, the i, 6 segment 58, wire 5?, brush iii, the 1 hole in the card, conductor i5, magnet 2i to wire 23. It follows therefore that for holes representing digits ii, i, 2, 3, and 2-, magnet is not ener gized and magnets 29 are energized at differential times. For holes representing digits 6, l, 8, is energized and magnets will now he explained. Fig. i, the her is guided for verticai reciprocation and at its up= per end supports two groups of horizontally slidable types 226 which, with the machine at rest occupy the position shown. That is 5-9 types are above the printing line opposite platen 2i and the as types are below the printing line. To select a type as the bar 25 is moved upwardly and to select a type 5-9 the bar 25 is moved down= wardly. The presence or absence of a key hole KH determines for the related type bar in which direction it shall travel.

Main shaft 28 has secured thereto a pair of complementary earns 29 which oscillate follower it and reciprocate a link ti whose upper end is pivoted to an arm 32. This arm is secured to a shaft so which through arm at, iinlr 8E and arm as rocks a shaft 3? to which is secured an arm 88. Arm is connected by a link at to a bail to and arm 38 is connected by a link iii to a bail both of which bails are pivoted on a common rod Through this linkage, when link Si is elevated, bails ill and 32 rock in opposite directions about rod is to the position shown in Fig. 2 and when the link 3! is lowered the bails return to the position of Fig. 1.

Each type bar 25 has a link (it pivoted thereto at and this link is connected to an interposer 66 whose right end is pivoted to a bell crank lever ll. Interposer so is provided with hooks to and so which cooperate, respectively with hooks on levers 5t and 58 pivoted on rod til. Lever Ell is normally urged in a clockwise direction by a spring 52 anchored to a block 53 on arm 32 and lever at is normally urged in a counterclooiswise types 26 past Interposer it is normally hooked in engage ment with lever 50 so that it is rocked clockwise with lever d toelevate type bar 25. Prior to, the rocking of the parts from the position of Fig. l, the interposer to may be shifted to the left to uncouple it from lever 60 and engage it with lever 5! through hook at. such shifting is brought about by energization of magnet 22 which at-' tracts its armature as and through rod er rocks a latch 5i counterclockwise to release bell crank lever 5? whose spring as will thereupon rock it to the broken line position of Fig. 2 and will shift interposer its to the left. Then when arm 38 rocks counterclockwise, the interposer at is drawn by spring 5% and lever 5i inthe same direction to lower the type bar 25, as indicated by broken lines in Fig. 2. Briefly then, when magnet 22 remains deenerglzed the type 25 moves upwardly from its position-oi Fig. 1 to advance the 4, 3, 2, l,

and 0 types 25 past the printing position as the distributor brush it (Fig. 3) contacts the d, 3, 2, 1, and 0 segments is. If magnet 22 is energized, then the bar 25 moves downwardly from its po-. sition of Fig. l to advance the 9, 8, '7, 6, and 5 the printing position as the distributor brush 29 contacts the same segments It.

Whenbar 25 moves upwardly, teeth 66 pass the toe of a pawl Si and when the bar moves downwardly, teeth 82 pass the toe of a pawl 63..

The two pawls are articulated at St and are normally held out of line with the teeth $5, $2 by a spring urged latch 65. When magnet 28 is en-- erg'ized, its armature 86, through rod t'i, rocks latch 65 to release pawls 8!, $8 tostop the bar. This stopping action is shown in Fig. 2 where pawl 8| is shown as engaging the 2 tooth 66 during the ascent of bar 25. If the bar were descending at such time pawl as would have engaged the '7 tooth 62 as indicated by broken lines. In the case of a zero designation, no tooth lid is provided so the type bar is not interrupted in its ascent and the'upper end 88 strikes bar 69 to position the zero type 25 in printing position. Hammer II! is thereafter actuated to take an im ression from the positioned types.

,When arm 38 rocks counterclockwise, an extension carrying a pin 72 extends a spring 13 to rock a detent I4 against bell crank lever 51 to hold it in normal position or rocked position during the actuation of the tyne bar. After the parts are again restored to home position a cam 15 rocks a follo er l6 and throu h link I! lever 18 rocks a bail 19 to positively return bell crank 41 to its latched position and to return interposer 46 to the position of Fig. l.

Recanitulating. the preliminary sensing of the key hole position KH determines. whether the t pe bar is to move up or down and interposer 45 is accordingly left coupled to ball 50 or uncoupled therefrom and cou led to ball 42. Thereafter the hole positions 4, 3. 2. 1. and 0 are tested in order and in synchronism with the tyne bar movement. and unon completion of a circuit to magnet 2| the bar is appropriately interrup ed in its ascent or descent to present the selected tyne for printing. It will be appreciated -that bails 40, 42 have an invariable excursion of fixed extent and that when a bar is stopped the interposer 48 and lever 50 or 5| stops therewith, with spring 52 or 54 yielding as arm 32 or 38 completes its stroke. 1

While there have beenshown and described and-pointed out the iundamental novel ieatures of the invention as applied to a single modification, it will be understood that various omissions and substitutions and changes in the form and details of thedevice illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention. It is the intention, therefore, to be limited only as indicated by the scope or the following claims. I g it -What is claimed is: 1. In a printing machine, a type bar having two groups of type elements, one normally above and the other below a printing line, means for selectively moving the bar to cause either group of elements to successively pass the printing position, ratchet teeth carried by the bar, a pawl structure and record controlled means for causing said pawl structure to engage said teeth during movement of the bar in either direction to interrupt said movemen and select a type element in-either group, for printing.

2. In a printing machine, a type bar, a first spring actuator forelevating the bar, a secondspring actuator for lowering the bar, record controlled means for selectively coupling the bar to either actuator whereby the bar will be selectively elevated or lowered through oneof the spring actuators, a pawl structure adjacent to the bar and engageable therewith to interrupt movement of the bar and record controlled means for causing the pawl structure to engage the bar at difierential times during its movement whereby the bar will be diiierentially positioned during its up or down movement.

3'. In a printing machine, means for sensing a record column in which. digits are recorded by a designation in one of five index point positions or by such designation accompanied by a designation in a key position, a type bar having two groups of type elements, one normally positioned below a printing line and including elements representing digits designated by a single designation, and the other group normally positioned above the printing line and including elements representing digits represented by two designations. means for normally elevating said type bar 1 to move the elements of the first group past the printing position, means controlled by said sensing means upon sensing a designation in the key position for preventing operation of said elevating means and for causing lowering of the type bar to move the elements of the second group past the printing position, and means controlled by the sensing means upon sensing a designation in one of said five index point positions for differentially interrupting movement of the type bar in either direction to select the related type element in eitherof the two groups.

4. In a printing machine, means for sensing a record column in which digits are recorded by a designation in one of five index point positions or by such designation accompanied by a designation in a-key position, a type bar having two groups of type elements, one normally positioned to one side of a printing line and including elements representing digits designated by a single designation, and the other group normally positioned to another side of the printing line and including elements representing digits represented by two designationsmeans for normally elevating said type bar to move the elementsof one group past the printing position, meanscontrolled by said sensing means upon sensing a ttion in the key position for preventing operation of said eieveting means and for ceusing lowering oi'the type her to move the elements of the second group post the printing position, one means continued by the sensing means upon sensing e, designation in one of said five index point positions for difierentieily interrupting movement of the type her in either direction to select the ireloteil tyne element in either of the two groups,

5. in a printing machine, means for sensing o. record column in which digits ere recorded by e, ciesignetion in one of five index point positions 01 by such designation accompanied by e designetion in e key position, o type her hoving two groups of type elements, one normeiiy positioned to one side of e printing lineond including elements representing digits desieneteoi by s, single designation, one the other group normally positioned to another side of the printing line one! movement of the type bar in either direction to select the related type element in either of the two groups.

ALBERT V7. MILLS. 

